Fatto generale: 63901 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 63901 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 63901 is an unremarkable number.
Data storica: December 14th is the day in 1958 that the 3rd Soviet Antarctic Expedition becomes the first expedition to reach The Pole of Relative Inaccessibility in the Antarctic.